1990 was the last blue moon on New Year's Eve, and the next one won't be until 2028.
A blue moon happens when you have two full moons on the same month. That's because a lunar cycle happens every 29 1/2 days, (354 days) while the solar cycle has another 11 days. So 37 times every 100 years, we have a blue moon.
Remember the beer pow-wow/photo-op/summitt at the White House with Sargent Crowley and Professor Henry Gates, Jr?
Barry's beer was Bud Light
Biden's beer was Bucklers
Gates had a Sam Adams Light
Crowley drank Blue Moon
That was also a once in a Blue Moon moment!
And like on New Year's Eve, everyone was kissing face!